Seawater is 5% salt. How much seawater do you need to ge to get 17.25 lb of salt?
We can start the problem by using a proportion:
"5% salt" = "5 parts salt per 100 parts seawater" = 5/100
Let's use "s" to represent the amount of seawater we need in pounds.
Then, the amount of salt in pounds can be calculated as:
0.05s = salt in pounds
We know that the amount of salt we need is 17.25 lb, so we can set up an equation:
0.05s = 17.25
To solve for s, we can divide both sides by 0.05:
s = 17.25 ÷ 0.05
s = 345
Therefore, we need 345 pounds of seawater to get 17.25 pounds of salt.